20212121110212 has 48 divisors (see below), whose sum is σ = 52402055166720. Its totient is φ = 6737340314016.

The previous prime is 20212121110201. The next prime is 20212121110213. The reversal of 20212121110212 is 21201112121202.

20212121110212 is a `hidden beast` number, since 20 + 212 + 1 + 211 + 10 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20212121110213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31726798 + ... + 32357594.

It is an arithmetic number, because the mean of its divisors is an integer number (1091709482640).

Almost surely, 2^{20212121110212} is an apocalyptic number.

It is an amenable number.

20212121110212 is an abundant number, since it is smaller than the sum of its proper divisors (32189934056508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212121110212 is a wasteful number, since it uses less digits than its factorization.

20212121110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927497 (or 927489 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20212121110212 its reverse (21201112121202), we get a palindrome (41413233231414).

The spelling of 20212121110212 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, two hundred twelve".